It is my understanding that the FXR will not "automatically" switch from Grid 
Input to Gen.
To my knowledge this is a manual option only.
I do not recall any way to make this happen automatically. That would have been 
great.
You can however still call for the generator at a low V setting and have the 
generator power an external charger to boost the batteries.
I think the brand we used to use was IOTA however, I have also seen golf cart 
chargers used.


Wayne Irwin
President
License #CVC56695
State Licensed Solar Contractor
Pure Energy Solar International Inc.
wa...@pureenergysolar.com
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352 377-6527 Office
352 336-3299 Fax


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________________________________
From: RE-wrenches <re-wrenches-boun...@lists.re-wrenches.org> on behalf of Jay 
via RE-wrenches <re-wrenches@lists.re-wrenches.org>
Sent: Thursday, October 24, 2024 5:57 PM
To: RE-wrenches <re-wrenches@lists.re-wrenches.org>
Cc: Jay <jay.pe...@gmail.com>
Subject: Re: [RE-wrenches] New Outback FXR Series as GTGBB on existing Off Grid 
Home

Hi Jeremy

There are two issues I think.

1 is that the inverter won’t connect.
And I don’t have an answer why the inverter won’t in sell mode but will in gen 
mode. Maybe the generator is slightly out of the more narrow window for grid. I 
presume you’ve checked hz and volts and they are in spec for grid?  I know 
sometimes the frequency control can be slightly variable without a load. I’ve 
had success in the past getting inverters to connect to a generator with 
putting some dumb loads on it. Like incandescent lights or small heater.

2. Maybe it’s a good thing it won’t because if it did connect wouldn’t it be 
possible for the inverter to try to sell to the generator?  If you didn’t have 
to change grid to Gen?

Jay

On Oct 23, 2024, at 8:47 PM, Jeremy Rodriguez via RE-wrenches 
<re-wrenches@lists.re-wrenches.org> wrote:


Wrenches,
We have a client that has brought utility power in and we now have the system 
hooked up to the utility.
In setting the system up, I've experienced that the inverter will sell and 
function fine with all the settings set up as Grid Tied mode, but it does not 
play nice when the grid is gone , and the Generator is brought in as the AC 
source.
We have installed an external transfer switch to switch the inverters' AC 
input, from either the utility or the existing backup generator ( if the grid 
fails), automatically.

The manual states that the inverter's two input selections can be programmed 
for seperate input modes, via the Input Type menu. Ive not been able to get 
this accomplished.

When simulating a grid outage, thus changing the AC input to the inverter being 
from the Generator, the inverter will not synch to the AC power to charge the 
batteries.
The only way that I can get the inverter to synch, is to switch the input mode 
to GEN from GRID.
This is not ideal since the client would need to be present to make the button 
push, even though the generator will be started automatically if the grid were 
to go down (hopefully) , just as it did before.

With no way to contact Outback , can someone advise how to properly program the 
inverter/ MATE3S for this project?
Equipment onsite:
Single VFXR3648 inverter
Two FM60 CCs
Hub4
MATE3S
ATS with Dual Relays 50A
L.A. Battery bank

Here's how we would like it to work:
Utility power ON:
Sell excess power once the batteries have gone through the Absorb cycle. 
Batteries remain full in case of a utility failure.
Utility Outage:
ATS now feeds Inv AC input via Generator if needed.
Inverter runs the home as it did , off grid.
If the battery voltage drops and the AGS is engaged, the inverter will use that 
input to charge the batteries as usual.  If the grid comes back on and the gen 
is running, the generator can still run, with no connection to the inverter.  
With the grid now charging the battery bank, and the AGS will enventually shut 
off the Gen. Based on voltage.
Contact me off list if necessary


Jeremy Rodriguez
All Solar Inc.
Penrose, CO
719-276-4954



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